Dictionaries do they work with the touch screen? I read in somewhere that in CR dictionaries don't work in touch screens (PB622, PB623).

EDIT:
I haven't read the post carefully enough before answering. The answer below is for the built-in reading app, not for CoolReader.

Dictionaries had a problem on the first touch-only models with old firmware, because the dictionary interface was optimized for the 5-way controller and it was difficult to navigate tiny controls.
The dictionary interface in the 4.X.Y firmware is completely reworked, so it is very touch friendly.

I have loaded my oldest dictionaries from the very old PB360 and it works. Even searching from keyboard works.